Spring-clamp.



G. 0. HBLVIGL T. MILLER. SPRING GLAMP.

APPLIGATION FILED JUNE 22, w12A Patented July 8, 1913.

l TMLZ@ 7? Qmvbneoow 0 j/lv Qmmm commun pLANuuuAPM cu..wAm|ANGTlm. u, cA

UNTED STA'LET OFFXCE.V

GILBERT O. I-IELVIG .AND THOMAS MILLER, OF DAWSON, MINNESOTA.

SPRING-CLAMP.

To all whom/'15 may con/corn Be it known that we, Ginnlnrr O. I-Innvie and TIIoMas MILLER, citizens oil the United States, residing at Dawson, in the county ot Lac qui Parle and State of Minnesota, have invented certain new and useful improvements in Spring-Clamps, of which the 'following is a specification.

The present invention .relates to a yielding clamp which is particularly adapted to hold. storm windows, screen windows and the like in place.

An important object of this invention is 'to provide a device of the above mentioned character', which will securely hold a screen window in place so that it will not rattle and will make a tight connection with the window frame to prevent `[lies or the like passing between the window 'frame and the screen window, and to hold storm windows in air-tight engagement with the window frame to properly keep out the wind and rain.

A further object of the invention is to provide clamping means of the above 1nen tioned character, which are self-adj usting so that they may be readily used with storm windows or the like of different thicknesses or which have their outer surfaces arranged flush with the window frame or extending outwardly beyond the same.

A 'further object of the invention is to provide means of the above mentioned character, which may be connected with the window frame Yfor holding the storm window or the like in place without the aid ot' any tools, the same being readily screwed into their operative positions by turning with the fingers.

A further object oit' the invention is to provide a clamping device of the above men! tioned character, which may be constructed of a single strand of wire, whereby it will be simple in construction and cheap to manufacture. i.

Other objects and advantages of the invention will loe apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure l is an outer side view of a window frame and storm window showing our improved clamping means associated therewith, Fig. 2 is a plan view of one of the clamping devices, Fig. 3

Specification of Letters Patent.

Application filed June 22, 1912.

Patented July 8,1913. serial No. 705,328.

is a side view of the saine, Fig. 4l is a plan view oi a slightly different torni of clamping device, Fig. 5 is a side view oil the same, and, F ig. (S is a detail section through the window iframe, showing the storm window extending outwardly therebeyond and a clamping device holding the same in place.

ln the drawings, wherein for the purpose ol. illustration, we have shown the preierred embodiments of our invention. the numeral 1 designates a window frame of any well known or preferred type, which in this instance is closed by a storm window 3. This storm window prete ably has its outer surface flush with the outer surface of the window 'trame l.

In order that the storm window 3 may be lirmly held in engagement with the window iframe to form a tight connection therewith to prevent the entrance oi air or rain into the room, we place our improved spring clamps 4 near the corners oi the window trame, as shown. As shown in Figs. 2 and 3, each of these spring clamps ll is t'ormcd of a single strand of spring wire having a tapered screw-threaded body portion 5, the upper end ot which is bent to form a head 6 of any suitable shape to be engaged between the lingers so that the entire device may be turned in screwing it into the window trame. The head 6 has its free end 7 bent to form a horizontal laterally extending yielding clamping arm 8, which may preferably be curved, as shown, with the free end 9 thereo't bent upwardly so that such 'tree end will not be caught in the storm window or cut the same when moved into engagement therewith. Attention is called to the tact that the yielding clamping arm S is disposed entirely and upon one side only of the screw-threaded body portion 5.

n the use of these clamping devices, each of the same is screwed into the window frame l near the corner thereof. This can be easily done by the operator taking hold 0i the head 6 with the fingers and turning the same with the screw-tlneaded body portion 5 in engagement with the window frame. It is thus seen that our clamping devices may be easily and quickly connected with the window frame without the use of any tools. The laterally extending yielding clamping arms 8 engage the storm window 3 or the like near the corners thereof and yieldingly hold the same in firm engagement with the window frame. The degree of pressure which these devices exert upon the storm window may be regulated by turning the same in either direction to increase or diminish the pressure as the case may be.

Attention is called to the fact that theY clamping devices 4 need only to be turned one-half of a revolution to bring the yielding clamping arms 8 out of engagement with the storm window 3, whereby the same may be removed. This is due to the fact that the laterally extending clamping arm S is disposed entirely upon one side of the screw-t-hreaded body portion 5. As shown in Fig. 6, the storm window 3 extends outwardly beyond the outer surface of the window frame 1. The clamping device 4, however, will hold the storm window securely in place. In this case the screwthreaded body portion 5 is not driven quite as far into the window frame as when used in connect-ion with the storm window 3, shown in Fig. 1, which storm window has its outer surface flush with the outer surface of the window frame 1, as hereinabove stated.

In Figs. 4 and 5 we have shown a slightly different form of clamping device. This clamping device is formed of a single strand of spring wire, having a tapered screw-threaded body portion 10, the upper end of which is bent to form a head 11. The head 11 has its lower free end 12 bent in the form of a plurality of turns 13 and 14, forming in eect, a coil spring. rlhe lower turn 14 is formed larger than the upper turn 13 and has its free end portion 15 adapted for engagement with the storm window or the like. The end portion 15 has its free end 16 bent upwardly, as shown. Attention is called to the fact that the turns 13 and 14 are arranged eccentrically with relation to the screw-threaded body portion 155, whereby corresponding sides of the turns 13 and 14 are arranged adjacent the body portion 15 and the opposite sides thereof extend for a considerable distance away from such screw-threaded body portion. The object in doing this is to construct a device which will release the storm window or the like held thereby upon being turned one-half of a revolution. rThe use of the second form of our invention is similar to that described in connection with the first form and it is thought unnecessary to state it again.

Although our clamping devices are particularly well adapted for use in connection with a window frame for holding a storm window or the like in place, we wish it understood that we do not solely restrict ourselves to this use, as we have found that the same may be advantageously employed in a great many different ways. It is also to be understood that the forms of our invention herewith shown and described, are to be taken as preferred examples of the same, and that certain changes in the shape, sizes, and arrangements of parts may be resorted to without departing from the spirit of the invention or the scope of the subjo-ined claim.

Having thus described our invention we claim As an article of manufacture, a yielding clamping device formed of a single section of suitably sti spring wire which is bent to form a body portion carrying at its outer end a vertical loop head extending radially with relation to the body portion whereby such body portion may be readily turned and a plurality of approximately horizontal spaced superposed spring turns carried by the free end of the vertical loop head, such spring turns surrounding the body portion and disposed eccentrically with relation thereto, the body port-ion be- 85 ing vscrew-threaded at one end thereof.

In testimony whereof we affix our signatures in presence of twowitnesses.

GILBERT O. HELVIG. THOMAS MILLER.

lVitnesses:

E. BORGENDALE, H. L. BORGENDALE..

Copies of this patent may be Obtained for ve cents each, by addressing the Commissioner of atents.

Washington, .'D. C. 

